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authorLin Ming <ming.m.lin@intel.com>2008-04-10 19:06:42 +0400
committerLen Brown <len.brown@intel.com>2008-04-22 14:29:30 -0400
commitbc7a36ab74e09da7bb63e2477b0740ac992b290e (patch)
treef9384f3f0909e1da6f12fb55643de8de594551dd /drivers/acpi/executer
parenta6f4a4511e65942b93ded60d746094ec0e58ed8e (diff)
downloadop-kernel-dev-bc7a36ab74e09da7bb63e2477b0740ac992b290e.zip
op-kernel-dev-bc7a36ab74e09da7bb63e2477b0740ac992b290e.tar.gz
ACPICA: Fixes for Unload and DDBHandles
Implemented support for the use of DDBHandles as an Indexed Reference, as per the ACPI spec. http://www.acpica.org/bugzilla/show_bug.cgi?id=486. Implemented support for UserTerm (Method invocation) for the Unload operator as per the ACPI spec. http://www.acpica.org/bugzilla/show_bug.cgi?id=580 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/executer')
-rw-r--r--drivers/acpi/executer/exdump.c27
-rw-r--r--drivers/acpi/executer/exresolv.c13
-rw-r--r--drivers/acpi/executer/exstore.c23
3 files changed, 46 insertions, 17 deletions
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index 251d84b..ed560e6 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -895,14 +895,25 @@ static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc)
} else if (obj_desc->reference.object) {
if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
ACPI_DESC_TYPE_OPERAND) {
- acpi_os_printf(" Target: %p [%s]\n",
- obj_desc->reference.object,
- acpi_ut_get_type_name(((union
- acpi_operand_object
- *)obj_desc->
- reference.
- object)->common.
- type));
+ acpi_os_printf(" Target: %p",
+ obj_desc->reference.object);
+ if (obj_desc->reference.opcode == AML_LOAD_OP) {
+ /*
+ * For DDBHandle reference,
+ * obj_desc->Reference.Object is the table index
+ */
+ acpi_os_printf(" [DDBHandle]\n");
+ } else {
+ acpi_os_printf(" [%s]\n",
+ acpi_ut_get_type_name(((union
+ acpi_operand_object
+ *)
+ obj_desc->
+ reference.
+ object)->
+ common.
+ type));
+ }
} else {
acpi_os_printf(" Target: %p\n",
obj_desc->reference.object);
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c
index 9c3cdf6..5b5b2ff 100644
--- a/drivers/acpi/executer/exresolv.c
+++ b/drivers/acpi/executer/exresolv.c
@@ -382,10 +382,10 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
}
/*
- * For reference objects created via the ref_of or Index operators,
- * we need to get to the base object (as per the ACPI specification
- * of the object_type and size_of operators). This means traversing
- * the list of possibly many nested references.
+ * For reference objects created via the ref_of, Index, or Load/load_table
+ * operators, we need to get to the base object (as per the ACPI
+ * specification of the object_type and size_of operators). This means
+ * traversing the list of possibly many nested references.
*/
while (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
switch (obj_desc->reference.opcode) {
@@ -455,6 +455,11 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
}
break;
+ case AML_LOAD_OP:
+
+ type = ACPI_TYPE_DDB_HANDLE;
+ goto exit;
+
case AML_LOCAL_OP:
case AML_ARG_OP:
diff --git a/drivers/acpi/executer/exstore.c b/drivers/acpi/executer/exstore.c
index 2408122..725614e 100644
--- a/drivers/acpi/executer/exstore.c
+++ b/drivers/acpi/executer/exstore.c
@@ -434,11 +434,24 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
*/
obj_desc = *(index_desc->reference.where);
- status =
- acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc,
- walk_state);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
+ if (ACPI_GET_OBJECT_TYPE(source_desc) ==
+ ACPI_TYPE_LOCAL_REFERENCE
+ && source_desc->reference.opcode == AML_LOAD_OP) {
+
+ /* This is a DDBHandle, just add a reference to it */
+
+ acpi_ut_add_reference(source_desc);
+ new_desc = source_desc;
+ } else {
+ /* Normal object, copy it */
+
+ status =
+ acpi_ut_copy_iobject_to_iobject(source_desc,
+ &new_desc,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
}
if (obj_desc) {
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